AMD is now able to confirm they have reproduced the Ryzen “segmentation fault issue” and are working with affected customers. AMD characterize it as a performance marginality problem exclusive to certain workloads on Linux. The faults are found to occur with many, parallel compilation workloads in particular — certainly not the workloads most Linux users will be firing off on a frequent basis unless intentionally running scripts like ryzen-test/kill-ryzen.



Good on AMD to have been working on this issue and to have found it. I know many Linux users will be happy to know it isn’t found on Epyc or Threadipper.

Ryzen customers believe to be affected by the problem can contact AMD Customer Care. Some of those who have contacted customer care about the segmentation faults have in turn been affected by thermal, power, or other problems, but AMD says they are committed to working with those encountering this performance marginality issue under Linux. AMD will also be stepping up their Linux testing/QA for future consumer products.

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Source: [H]ardOCP – AMD Confirms Linus Marginality Problem, Doesn’t Affect Epyc or Threadripper